So this would be the show that was featured on the "Led Zeppelin" DVD?

I think you're mixing up The Song Remains the Same with the Led Zeppelin DVD stuff. The Song Remains the Same was 1973 @ Madison Square Garden, and the LZ DVD has some of Earl's Court in 1975 and Royal Albert Hall in 1970. The Earl's Court shows are supposed to be Led Zeppelin's all time best, and Jimmy page has mutlicam pro recorded footage of all the gigs and won't release them for basically no reason.